Parents from Lyons Township High School received an email Thursday night notifying them of the death of the freshman tennis player.

Police Friday morning guarded the entrance to the Indian Head Park subdivision and asked residents for an ID card as proof of their address, and later in the day, stopped cars and passed out the flyer.

Lyons Township High School was offering counseling at the school Friday for students and faculty.

"She was always nice to everybody. Sweet. She wasn't mean to anyone," said Cole Gilchris, a classmate.

A vigil was scheduled for Friday night.

An anonymous donor put up a $10,000 reward for any info that leads to an arrest and conviction in the case.